Add email app object and test add new email account

This is one part for issue #599. In this part, I only created method to
set up the first email account and add a sample test here.
To run the test, you need to add following info in the testvars.json
"this_email_account": {
"launch_name": "",
"launch_email": "",
"launch_password": ""
},
Next part I will try to create tests for emails.